优化人口结构，延缓老龄化，保持人口优势
To improve the demographic structure of China, slow down the aging trend, and maintain the advantage of China's population.
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安全问答是一个知识全球问答,包含丰富的问答知识
To improve the demographic structure of China, slow down the aging trend, and maintain the advantage of China's population.
原文地址: https://www.cveoy.top/t/topic/nALd 著作权归作者所有。请勿转载和采集!